perform checkout and node dependencies in highlight job

.github/workflows/deploy-to-neocities.yml

@@ -57,6 +57,12 @@ jobs:
     runs-on: ubuntu-latest
     needs: build
     steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+      - name: Install Node.js dependencies
+        run: "[[ -f package-lock.json || -f npm-shrinkwrap.json ]] && npm ci || true"
       - name: Download artifact
         uses: actions/download-artifact@v4
         with: